Abstract
Highly transparent, luminescent and biocompatible ZnO quantum dots were prepared in water, methanol, and ethanol usingliquid-phase pulsed laser ablation technique without using any surfactant. Transmission electron microscopy analysis confirmedthe formation of good crystalline ZnO quantum dots with a uniform size distribution of 7 nm. The emission wavelength could bevaried by varying the native defect chemistry of ZnO quantum dots and the laser fluence. Highly luminescent nontoxic ZnOquantum dots have exciting application potential as florescent probes in biomedical applications.© 2007 The Electrochemical Society. DOI: 10.1149/1.2820767 All rights reserved.Manuscript submitted September 4, 2007; revised manuscript received November 6, 2007.Available electronically December 17, 2007.
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